Portable electric flash lamp



March 25 1924.

J. STlRlsS PORTABLE ELECTRIC FLASH LAMP Filed Oct. 5, 1.922

IlyI/EzyToR.

ATTORNEY.`

Puentes Mar. 2s, l1924.

UNITEDg STATES PATENT oFFics.

PORTABLE ELECTRIC rnasn Lam.

Application Bled October 5, 1922. Serial N0..592,511

To all 'wht-m t may concern Be it known that I, JACOB STIRIss, aresident of Arverne, Queens County, New York State, and a citizen of theUnited States, have invented certain new' and useful Improvements inPortable p Lamps, of which ythe following is a specification.

This invention elates to portable electric lamps of the cylindrical typecomprising a battery and electric bulb, and the object of the inventionis to provide an inexpensive and convenient means by whichv contacts maybe closed by the lingers of the'hand that holds the lamp to throw thebattery into the circuit for an instant flash or for permanentillumination, and to instantly dis connect the circuit to render thelamp inoperative.

invention. are more fully descri in the followin specification, setforth in the appended c aims and illustrated in the accompanyingdrawings, wherein: c

Figure 1 is a side elevation of theA` xmproved lamp.

. Fig. 2 is a vertical sectional view of the same. Fig. 3 is anelevation showing the parts of the 'casing separated.

4 is a crosssectional view through the line 4-,4 of Fig. 1.

Fig. 5 is a plan view of the insulating washer.

Vat; A casing is provided to obtain the parts of the lam and comprisesthe sections 10 and 11, the atter ada ted to contain the battery 12,from whic it is insulated, and carrying the contact plunger 13 thatthrows the battery and casin in circuit and plays throu h the bottom osection 11-to be acces sible or o ration. The section 10 is a cap thatcarries the lamp 14 and fits over the section 11 and is connected withthe same by means of what is substantially the bayonet-joints comprisingthe studs 15 pressed outward from the section 11 and the channels 16 inthe cap into which the studs entery and are adapted to 5o pass intolateral branches 17 concentric with the circumference of the casisections of the offset branches 18 and are eilected upward and havesockets 18 at their outer ends to receive and retain the stud 15. u Thelower end ofthe battery 12 rests on Electric Flash' These and otherdetails and ob'ects of the f Yscribed and within the and is supported bythe washer 19 of a nonconducting material, such as soft rubber, andhaving a perforation 20 and radial slit-s that permit the pointed end 21of vthe plunger 13 to penetrate the same and make 60' the electricalcontact with the battery to com lete the circuit.

T e stem 22 of the lamp 14 makes contact with the button 23 of thebatter when the cap is put upon the casing 11 andY held there when theca is partly rotated to the left and the stu s l5 secured in theconcentric Ybranches 17, and the lamp is now ready for the operation ofthe circuit closer 13 which, when pressed inward, causes its point 2l tocrowd past the walls of the opening 20 and complete the electric circuitof battery, casing, cap and stem 22 and illuminating the T eillumination of the lamp will continue only so long as the plunger 13 isdepressed and when released the walls of the `washer will force itoutward and destroy thc circuit.

When it is desired to obtain a continuous illumination the ca 10 isturned to the right and the studs 5 will enter the branch vchannel 18,and, actin on its walls, will force the cap further own on the cas'carry' down with it the battery 12 until it meets point 21 when thecircuit is closed and the cap is held at this point by the stud 1in'the'sockets 18', securing continuous 1 umination. p

These operations may all be performed by the rs ofthe hand that carriesthe lamp and a ows the free use of the other han '24 is formed in thesection 11 to aflord a firm grip on the lamp while the two arts arebeing operated independently an the batezrsy 1s surrounded by insulatingmateria It is obvious that the arts may be otherwise a or modi edwithout departm ing from e tial features abovepde scope of the ap pendedclaims.

I claim: 1. In a rtable electric lamp, the com bination o a casingcomprising independent sections, a battery adapted to be shifted in oneof the sections, a circuit closi plunr adapted to contact withthengattery, xible separating means between the bat- 11 tery andplunger, and means operable by the Sections to close the circuit betweenthe battery and plun er.

2. In a rtab e electric lamp, the combination o a casing comprisingindependently moving sections, a battery adapted to be shifted by themovement-of one of the sections, a lamp carried by the latter sectionand makin contact with one end of the battery a flexibe support for thebattery, a contact plunger adapted to penetrate the support when thebattery is shifted, and means for holding the battery in its shiftedposition.l

3. In a portable electric lamp, the combination of la casing comprisingtelescopic sections, a lexiblewasher in the bottom of one of thesections, a contact plunger beneath said washer, a battery resting onthe washer, and a channel in the other section of the casing and adaptedto receive a stud from the first section to depress the battery andcause the plunger to penetrate the washer and complete a circuit.

4. In a ortable electric lamp, the combination o a casing made up of twotelescopic sections, an insulated battery in one of the sections, a.flexible penetrable washer supporting the battery, a plunger in thebattelg7 section adapted to penetrate the washer an electrically connectthe battery, with its section, and a stud at the upper end of the lattersection adapted to pla in an inclined channel in the upper movab esection to depress the battery to close thecircuit.

5. I'n a portable electric lamp, the combination of a stationary casingsection, a battery insulated and contained within the same, a flexiblewasher supporting the battery, a circuit closing lungeradapted toenetrate the washer an establish a circuit tween the battery and casingsection, studs at the upper end of said section, a movable section withinclined channels to receive the studs, and a lam carried by the movablesection and adaptes to depress the batter when the said movable sectionis turne and the inclined channelsand studs cause the sections totelescope.

, In testimony whereof I hereunto aix my o signature.

y JACOB STIRISS.

